One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,7,8,5)(9,10)(11,13)(12,15)(14,16)(17,18,22,25)(19,23,26,20)(21,24,30,32)(27,31,29,28)(1,2,4,6)(3,7,8,5)(9,10,14,16)(11,13,15,12)(17,19,22,26)(18,23,25,20)(21,29,30,27)(24,28,32,31)(1,2)(3,5)(4,6)(7,8)(9,11,14,15)(10,12,16,13)(19,26)(20,23)(27,29)(28,31)(1,2,4,6)(3,5,8,7)(9,12,14,13)(10,11,16,15)(17,20)(18,19)(21,28)(22,23)(24,27)(25,26)(29,32)(30,31)(1,2)(3,5)(4,6)(7,8)(9,10)(11,12)(13,15)(14,16)(17,18)(19,23)(20,26)(21,24)(22,25)(27,31)(28,29)(30,32) involution — undirected(1,3,4,8)(2,5,6,7)(9,13,14,12)(10,15,16,11)(17,21)(18,24)(19,27)(20,28)(22,30)(23,31)(25,32)(26,29)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.